Shoe soles and shoes equipped with these soles

Abstract

To provide a shoe sole and shoes that prevent toes from floating. [Solution] A sole according to one aspect of the present invention comprises a first raised portion positioned to correspond to the base of the toes and extending in the width direction of the foot along the base, and an upper first valley and a lower first valley formed around the first raised portion on the upper and lower surfaces of the entire sole, characterized in that the first raised portion rises upward when the foot is stepped on. Furthermore, it is desirable to further provide a second raised portion positioned to correspond to the arch of the foot, which is desirable to support the three arches of the foot, and an upper second valley and a lower second valley formed around the second raised portion on the upper and lower surfaces of the sole body, such that the second raised portion rises upward when the foot is stepped on.

Description

TECHNICAL FIELD

[0001] The present invention relates to a shoe sole and a shoe provided with the same. BACKGROUND ART

[0002] In recent years, an increasing number of people are in a "floating toe" state where the tips of the toes do not touch the ground when standing. When in the floating toe state, the arch structure of the sole of the foot does not function sufficiently, and the user cannot walk using the toes as if gripping the ground, resulting in unstable body posture during walking and insufficient exercise performance.

[0003] If the arch structure of the sole of the foot is incomplete, impact cannot be sufficiently absorbed, the muscles and joints of the sole are easily damaged and prone to inflammation, and various foot problems such as flat feet, plantar fasciitis, hallux valgus, sesamoid disorder, and accessory navicular disorder may occur.

[0004] The arch structure of the sole of the foot is considered to inherently require the sole of the foot to form an arch-shaped arch for humans to walk bipedally. Specifically, as shown in Figure 14, there are three arch structures: the medial longitudinal arch extending from the ball of the big toe a at the base of the big toe to the calcaneus B, the lateral longitudinal arch extending from the ball of the little toe C at the base of the little toe to the calcaneus B, and the transverse arch along the metatarsophalangeal (MP) joints from the ball of the big toe a to the ball of the little toe C, which together form the arch of the foot. However, in modern people, it has become a problem that the arch of the foot necessary for human bipedal walking is not sufficiently formed.

[0005] Accordingly, shoes for making the arch structure of the sole of the foot function sufficiently have been proposed (for example, Patent Document 1). The shoe of Patent Document 1 is a functional shoe provided with a foot arch support, which includes a support main body fixed to the shoe main body, a slider that moves up and down relative to the support main body, and a contact member coupled to the upper end of the slider. The contact member protrudes into the interior of the shoe and comes into contact with the foot arch on the sole of the foot. Thereby, the arch portion of the sole of the foot is effectively formed into an arch shape. PRIOR ART DOCUMENTS PATENT DOCUMENTS

[0006] [Patent Document 1] Special Publication No. 2012-517318 [Overview of the project] [Problems that the invention aims to solve]

[0007] On the other hand, a problem in modern people is floating toes, where the toes do not touch the ground when standing or walking. With floating toes, the toes do not touch the ground, making it impossible to apply force to the toes and grip the ground. As with the prior art mentioned above, there are several shoes that address the arch of the foot, but currently there are almost no soles or shoes that address floating toes, and if left untreated, there is a risk that people will no longer be able to walk using their toes to grip the ground.

[0008] Furthermore, if you have floating toes, the arch structure of the sole of your foot is not functioning properly, making it impossible to use your toes to grip the ground when walking. This results in an unstable posture while walking and an inability to fully utilize your athletic abilities.

[0009] Furthermore, in the shoe described in Patent Document 1, which employs an arch structure, the sole of the foot is constantly subjected to strong pressure by the contact member. Therefore, even when the foot is not in contact with the ground and no load is acting on the arch, strong pressure continues on the sole of the foot. Consequently, the wearer may constantly feel a strong pressure on the sole of their foot.

[0010] Therefore, the present invention has been made in view of these points, and its main objective is to provide a shoe sole and shoe that primarily prevents floating toes. [Means for solving the problem]

[0011] A sole according to one aspect of the present invention comprises an upper first raised portion that is raised on the upper surface of the sole body, positioned at a location corresponding to the base of the toes, and extending in the width direction of the foot along the base, and an upper first valley portion formed around the upper first raised portion relative to the upper surface of the sole body, characterized in that when the foot is stepped on, the upper first raised portion rises upward.

[0012] According to this configuration, an upper first ridge is provided on the upper surface of the sole body, positioned to correspond to the area near the base of the toes, and extending in the width direction of the foot along the base of the toes. When the foot is pressed against the ground, the upper first ridge rises upward, thus preventing the toes from touching the ground when standing or walking. Furthermore, an upper first valley is provided around the upper first ridge relative to the upper surface of the sole body, and its thickness is thinner than that of the sole body, which promotes the upward rise of the first ridge relative to the sole body when the foot is pressed against the ground.

[0013] Furthermore, the sole of this shoe comprises a lower first ridge that is raised on the lower surface of the sole body, positioned to correspond to the area near the base of the toes, and extending in the direction of the width of the foot, and a lower first valley formed around the lower first ridge relative to the lower surface of the sole body, characterized in that when the foot is stepped on, the upper first ridge rises upward via the lower first ridge.

[0014] According to this configuration, a lower first ridge is provided on the underside of the sole body, positioned to correspond to the area near the base of the toes, and extending in the width direction of the foot. When the foot is pressed against the ground, the upper first ridge rises upward via the lower first ridge, thus preventing the toes from touching the ground when standing or walking. Furthermore, since a lower first valley is formed around the lower first ridge relative to the underside of the sole body, the area between the upper first valley and the lower first valley is thinner than the thickness of the sole body, which promotes the upward rise of the first ridge relative to the sole body when the foot is pressed against the ground.

[0015] Furthermore, this sole is characterized in that the area of ​​the lower first ridge viewed from below is equal to the area of ​​the upper first ridge viewed from above. With this configuration, since the area of ​​the lower first ridge viewed from below is equal to the area of ​​the upper first ridge viewed from above, when stepping on the ground, the upper first ridge rises upward via the lower first ridge.

[0016] Furthermore, this sole is characterized in that the area of ​​the lower first ridge viewed from below is larger than the area of ​​the upper first ridge viewed from above. With this configuration, since the area of ​​the lower first ridge viewed from below is larger than the area of ​​the upper first ridge viewed from above, when stepping on the ground, the upper first ridge reliably rises upward via the lower first ridge, and because the area of ​​the lower ridge that contacts the ground is large, walking can be done without discomfort, and the strength of the side that contacts the ground can be increased.

[0017] Furthermore, this sole is characterized in that the upper end of the upper first ridge protrudes 10 mm or less from the upper surface of the sole body. With this configuration, since the upper end of the upper first ridge protrudes 10 mm or less from the upper surface of the sole body, floating toes can be prevented even when the toes do not touch the ground while standing or walking. In addition, because the protrusion is not excessive, discomfort when wearing the shoes is also reduced. The protrusion is more preferably 7 mm or less, and even more preferably 5 mm or less, and this dimension reduces discomfort when wearing the shoes or walking.

[0018] Furthermore, this sole is characterized in that the lower end of the lower first ridge protrudes 10 mm or less from the bottom surface of the sole body. With this configuration, since the lower end of the lower first ridge protrudes 10 mm or less from the bottom surface of the sole body, the upper first ridge is raised upward when stepping on the ground, and furthermore, floating toes, where the toes do not touch the ground when standing or walking, can be prevented. The protruding dimension is more preferably 7 mm or less, and even more preferably 5 mm or less, and with this dimension, discomfort when wearing the shoe is also minimized.

[0019] Furthermore, this sole is characterized in that the upper end of the upper first ridge does not protrude from the upper surface of the sole body, but when the foot is stepped on, the upper end of the upper first ridge protrudes from the upper surface of the sole body.

[0020] With this configuration, when the toes do not touch the ground while standing or walking, the upper first ridge does not protrude from the upper surface of the sole body, allowing the shoes to be worn without discomfort like conventional shoes. Furthermore, when stepping on the ground while walking, the upper first ridge, which is formed into an island shape by the valleys, rises upward and protrudes, thus preventing floating toes.

[0021] Furthermore, this sole is characterized in that the lower end of the lower first protrusion does not protrude from the lower surface of the sole body, and the upper first protrusion rises upward when the foot is stepped on.

[0022] With this configuration, when the load is applied almost evenly from the entire bottom surface of the sole toward the ground, such as when standing, the upper first ridge does not protrude from the top surface of the sole body, so it can be worn without discomfort like conventional shoes. Furthermore, when stepping on the ground, such as when walking, the upper first ridge, which is formed into an island shape by the valleys, rises upward and protrudes, thus preventing floating toes.

[0023] Furthermore, the sole of this shoe is characterized in that the upper first ridge has a mountain-shaped cross-section when cut in the longitudinal direction of the foot. With this configuration, because the upper first ridge has a mountain-shaped cross-section when cut in the longitudinal direction of the foot, the toes can grip the upper first ridge, preventing floating toes where the toes do not touch the ground when standing or walking. In addition, because it is not formed at an acute angle, discomfort when wearing the shoes and when walking is reduced.

[0024] Further, in this shoe sole, the upper first raised portion is characterized in that the dimension from the front end to the rear end in the longitudinal direction of the foot is 5 mm or more and 35 mm or less, and the lateral width is 40 mm or more and 80 mm or less. According to this configuration, since the upper first raised portion has a dimension of 5 mm or more and 35 mm or less from the front end to the rear end in the longitudinal direction of the foot and a lateral width of 40 mm or more and 80 mm or less, it reliably conforms to the shape of the base of the toes, and can prevent floating toes where the toes do not touch the ground during standing posture and walking.

[0025] Further, this shoe sole is characterized in that, in the lower first raised portion, both side portions in the width direction of the shoe sole are formed lower than the central portion. According to this configuration, since both side portions of the lower first raised portion in the width direction of the shoe sole are formed lower than the central portion, catching during walking is suppressed, walking motion can be performed smoothly, and uncomfortable feeling during walking can be reduced.

[0026] Further, this shoe sole is characterized in that the lower surface of the lower first raised portion is inclined on both side portions in the width direction of the shoe sole such that both ends are the lowest. According to this configuration, since the lower first raised portion is inclined on both side portions in the width direction of the shoe sole such that both ends are the lowest, uncomfortable feeling during walking can be reduced.

[0027] Further, this shoe sole is characterized in that the lower first raised portion is provided with a reinforcing member made of a material having higher strength than the shoe sole main body on the lower surface side. According to this configuration, since the reinforcing member made of a material having higher strength than the shoe sole main body is provided on the lower surface side of the lower first raised portion, the durability and stability of the shoe can be improved. For example, a configuration in which the shoe sole main body is EVA and the material having higher strength than the shoe sole main body is rubber or the like can be considered.

[0028] Further, this shoe sole is characterized in that, in the lower first raised portion, the boundary between the shoe sole main body and the reinforcing member is located above the lower surface of the shoe sole main body and is hidden in the lower first valley portion. According to this configuration, peeling of the reinforcing member can be prevented compared to the case where the boundary between the shoe sole main body and the reinforcing member is flush with the lower surface of the shoe sole or at a position protruding beyond the lower surface.

[0029] As mentioned above, in order to prevent floating toes and achieve more stable walking, it is desirable to support the three-point arch during walking. Therefore, a sole according to one aspect of the present invention further comprises an upper second ridge that rises on the upper surface of the sole body and is positioned near the center of the triangle formed by the ball of the big toe, the ball of the little toe, and the heel of the foot, and an upper second valley formed around the upper second ridge relative to the upper surface of the sole body, characterized in that the upper second ridge rises upward when the foot steps on the ground.

[0030] This configuration includes an upper second ridge that rises on the upper surface of the sole body and is positioned near the center of the triangle formed by the ball of the big toe, the ball of the little toe, and the heel of the foot. When the foot is pressed against the ground, the upper second ridge rises upward, thus maintaining the function of the three arches of the sole. Furthermore, an upper second valley is formed around the upper second ridge relative to the upper surface of the sole body, and its thickness is thinner than that of the sole body, which promotes the upward rise of the upper second ridge relative to the sole body when the foot is pressed against the ground.

[0031] Furthermore, the sole of this shoe comprises a lower second ridge that rises on the lower surface of the sole body and is positioned to include a location corresponding to the center of the triangle formed by the ball of the big toe, the ball of the little toe, and the heel of the foot, and a lower second valley formed around the lower second ridge relative to the lower surface of the sole body, characterized in that when the foot is stepped on, the upper second ridge rises upward via the lower second ridge.

[0032] This configuration includes a lower second ridge that rises on the underside of the sole body and is positioned near the center of the triangle formed by the ball of the big toe, the ball of the little toe, and the heel of the foot. When the foot is pressed against the ground, the upper second ridge rises upward via the lower second ridge, thus maintaining the function of the three arches in the sole of the foot. Furthermore, a lower second valley is formed around the lower second ridge relative to the underside of the sole body, resulting in a thickness thinner than the sole body itself, which facilitates the upward rise of the upper second ridge relative to the sole body when the foot is pressed against the ground.

[0033] Furthermore, this sole is characterized in that the area of ​​the lower second ridge viewed from below is equal to the area of ​​the upper second ridge viewed from above. With this configuration, since the area of ​​the lower second ridge viewed from below is equal to the area of ​​the upper second ridge viewed from above, when stepping on the ground, the upper second ridge rises upward via the lower second ridge.

[0034] Furthermore, this sole is characterized in that the area of ​​the lower second ridge viewed from below is larger than the area of ​​the upper second ridge viewed from above. With this configuration, since the area of ​​the lower second ridge viewed from below is larger than the area of ​​the upper second ridge viewed from above, when stepping on the ground, the upper second ridge reliably rises upward via the lower second ridge, and because the area of ​​the lower ridge that contacts the ground is large, walking can be done without discomfort, and the strength of the side that contacts the ground can be increased.

[0035] Furthermore, this sole is characterized in that the upper end of the upper second ridge protrudes 10 mm or less from the upper surface of the sole body. With this configuration, since the upper end of the upper second ridge protrudes 10 mm or less from the upper surface of the sole body, the function of the three arches in the sole of the foot can be further maintained. The protruding dimension is more preferably 7 mm or less, and even more preferably 5 mm or less, and with this dimension, discomfort when wearing or walking can be minimized.

[0036] Furthermore, this sole is characterized in that the lower end of the lower second ridge protrudes 10 mm or less from the lower surface of the sole body. With this configuration, since the lower end of the lower second ridge protrudes 10 mm or less from the lower surface of the sole body, the upper second ridge is raised upward when stepping on the ground, and the function of the three arches in the sole of the foot can be maintained. Furthermore, the protruding dimension is more preferably 7 mm or less, and even more preferably 5 mm or less, as this dimension minimizes discomfort when wearing the shoes or walking.

[0037] Furthermore, this sole is characterized in that the upper end of the upper second ridge does not protrude from the upper surface of the sole body, but when the foot is pressed against the ground, the upper end of the upper second ridge protrudes from the upper surface of the sole body. With this configuration, when the toes do not touch the ground while standing or walking, the upper second ridge does not protrude from the upper surface of the sole body, so it can be worn without discomfort like conventional shoes. At the same time, when the foot is pressed against the ground, such as when walking, the upper second ridge, which is formed in an island shape by the valleys, rises upward and protrudes, thus maintaining the function of the three arches in the sole of the foot.

[0038] Furthermore, this sole is characterized in that the lower end of the lower second ridge does not protrude from the underside of the sole body, and when the foot is pressed against the ground, the upper second ridge rises upward. With this configuration, when the load is applied almost evenly from the entire underside of the sole to the ground, such as when standing, the upper second ridge does not protrude from the upper side of the sole body, so it can be worn without discomfort like conventional shoes. At the same time, when the foot is pressed against the ground, such as when walking, the upper second ridge, which is formed in an island-like shape by the valleys, rises upward and protrudes, thus maintaining the function of the three arches in the sole of the foot.

[0039] Furthermore, this sole is characterized in that the upper second ridge is longer in the front-to-back direction than in the width direction of the sole body, and the center of the width direction of the sole body is the highest point. With this configuration, since the upper second ridge is longer in the front-to-back direction than in the width direction of the sole body, and the center of the width direction of the sole body is the highest point, it is possible to reliably press on the area near the center of the triangle formed by the ball of the big toe, the ball of the little toe, and the heel of the foot, and the function of the three arches of the sole can be maintained.

[0040] Furthermore, it is preferable that the lower second ridge of the sole includes the upper second ridge in a plan view and is longer in the front-to-back direction than in the width direction of the sole body. This configuration is suitable for maintaining the arch because the triangle formed by the arches connecting the ball of the big toe, the ball of the little toe, and the heel of the foot is long in the front-to-back direction.

[0041] Furthermore, it is preferable that the sole of the shoe comprises a first island portion positioned in a plan view corresponding to the upper second ridge portion on the lower second ridge portion, and a second island portion on the rear side of the first island portion. With this configuration, since the first island portion corresponds to the upper second ridge portion, stepping on this portion reliably causes the upper second ridge portion to rise, and the presence of the second island portion reduces discomfort when stepping while walking, and also improves strength.

[0042] Furthermore, the sole is characterized in that the first island portion of the lower second ridge is formed lower in the front and rear portions in the front-to-back direction of the sole than in the central portion. With this configuration, since the lower second ridge is formed lower on both sides in the front-to-back direction of the sole than in the central portion, it can suppress catching and promote smooth walking when performing a walking motion in which the heel gradually makes contact with the ground from the front, thereby reducing discomfort while walking and enabling smooth walking.

[0043] Furthermore, the sole is characterized in that the lower surface of the first island portion of the lower second ridge is inclined such that the front and rear portions in the front-to-back direction of the sole are the lowest. With this configuration, the lower second ridge is formed so that both sides in the front-to-back direction of the sole are lower than the central portion, allowing for smoother walking.

[0044] Furthermore, the sole is characterized by being formed at a height such that the lower surface of the second island portion of the lower second ridge and the lower surface surrounding the second island portion of the sole body are flush. With this configuration, since the lower surface of the second island portion of the lower second ridge and the lower surface surrounding the second island portion of the sole body are formed at a height such that they are flush, it promotes smooth walking motion and reduces discomfort when walking or wearing the shoes.

[0045] Furthermore, this sole is characterized in that the lower second ridge portion is provided with a reinforcing member made of a material stronger than the sole body on its underside. With this configuration, since the lower second ridge portion is provided with a reinforcing member made of a material stronger than the sole body on its underside, the durability and stability of the shoe can be improved. For example, the sole body may be made of EVA, and the material stronger than the sole body may be rubber.

[0046] Furthermore, this sole is characterized in that, at the lower second raised portion, the boundary between the sole body and the reinforcing member is located above the lower surface of the sole body and is concealed in the lower second valley. With this configuration, peeling of the reinforcing member can be prevented compared to cases where the boundary between the sole body and the reinforcing member is flush with or protrudes from the lower surface of the sole.

[0047] Furthermore, this sole is characterized in that the upper second ridge is 30 mm to 70 mm in length from the front end to the rear end in the longitudinal direction of the foot, and has a width of 10 mm to 50 mm. With this configuration, since the upper second ridge is 30 mm to 70 mm in length from the front end to the rear end in the longitudinal direction of the foot, and has a width of 10 mm to 50 mm, it can reliably follow the vicinity of the center of the triangle formed by the ball of the big toe, the ball of the little toe, and the heel of the foot, and can maintain the function of the three arches.

[0048] Furthermore, this sole is characterized in that at least a portion of the first ridge and / or at least a portion of the second ridge are integrally formed with the sole body. Here, the first ridge refers to the upper first ridge and the lower first ridge combined, and the second ridge refers to the upper second ridge and the lower second ridge combined. With this configuration, since at least a portion of the first ridge and / or the second ridge is integrally formed with the sole body, the number of steps and parts required to position the first ridge and / or the second ridge can be reduced. In addition, attachment to the shoe becomes easier.

[0049] Furthermore, the sole of this shoe is characterized by having a recess positioned to correspond to the heel of the foot, and a cushioning material being housed in the recess. With this configuration, since a recess is provided to correspond to the heel and a cushioning material is housed in the recess, the impact on the heel when a pedestrian lands can be mitigated, and the burden on the pedestrian's foot can be reduced.

[0050] Furthermore, this sole is characterized in that the thickness of the cushioning material is between 1 mm and 6 mm. With this configuration, since the thickness of the cushioning material is between 1 mm and 6 mm, the impact on the heel when a pedestrian lands can be reliably mitigated, and the burden on the pedestrian's foot can be reduced.

[0051] Furthermore, this sole is characterized in that the sole body is made of ethylene vinyl acetate resin. With this configuration, since the sole is made of ethylene vinyl acetate resin, the sole body can be made lightweight and highly elastic.

[0052] Furthermore, this sole is characterized in that at least a portion of the first ridge and / or at least a portion of the second ridge can be detachably attached to the sole body. Here, the first ridge refers to the upper first ridge and the lower first ridge combined, and the second ridge refers to the upper second ridge and the lower second ridge combined. With this configuration, since the first ridge and / or the second ridge can be detachably attached to the sole body, if the first ridge and / or the second ridge are damaged or worn, they can be easily replaced with new first and / or second ridges.

[0053] A shoe according to one aspect of the present invention is characterized by having the above-described sole. With this configuration, by providing the sole in the shoe, floating toes can be prevented. In another aspect, the functions of the three arches in the sole of the foot can be maintained. [Effects of the Invention]

[0054] The sole of the present invention provides a sole that prevents floating toes and a shoe equipped with this sole. In another embodiment, it is possible to provide a sole that can support the three-point arch for stable walking and a shoe equipped with this sole. [Brief explanation of the drawing]

[0055] [Figure 1] This is a perspective view of a shoe sole according to the first embodiment of the present invention. [Figure 2] This is a plan view of a shoe sole according to the first embodiment of the present invention. [Figure 3] This is a bottom view of a shoe sole according to the first embodiment of the present invention. [Figure 4] This is a perspective view of the sole body according to the first embodiment of the present invention. [Figure 5] (a) is a cross-sectional view along line aa in Figure 2, and (b) is a cross-sectional view along line BB in Figure 2. [Figure 6]This is an explanatory diagram showing the positional relationship between the sole of a shoe and the foot according to the first embodiment of the present invention. [Figure 7] (a) is a schematic cross-sectional view showing the state when stepping on the ground, and (b) is a partially enlarged cross-sectional view showing the state when stepping on the ground. [Figure 8] This is a perspective view of a shoe sole according to a second embodiment of the present invention. [Figure 9] Figure 8 shows a cross-sectional view along the CC line. [Figure 10] This is a perspective view of the sole of a shoe according to the third embodiment of the present invention. [Figure 11] This is a plan view of a shoe sole according to a third embodiment of the present invention. [Figure 12] This is a bottom view of the sole of a shoe according to the third embodiment of the present invention. [Figure 13] (a) is a cross-sectional view along line aa in Figure 11, (b) is a cross-sectional view along line BB in Figure 11, and (c) is a cross-sectional view along line CC in Figure 11. [Figure 14] This is a schematic diagram showing the arch structure of the foot. [Modes for carrying out the invention]

[0056] <First Embodiment> The following describes in detail a shoe sole 10 according to one embodiment of the present invention. However, the present invention is not limited by this embodiment. Furthermore, the components in the following embodiment include those that are easily substituted or substantially identical to those that are easily substituted by those skilled in the art. Moreover, the configurations described below can be combined as appropriate. Furthermore, various omissions, substitutions, or modifications of the configuration can be made without departing from the spirit of the present invention.

[0057] Figure 1 is a perspective view of the sole 10 according to this embodiment, seen from diagonally above. Figure 2 is a plan view of the sole 10, and Figure 3 is a bottom view of the sole 10. Figure 4 is a perspective view of the sole body 11, seen from diagonally above.

[0058] As shown in Figures 1 to 4, the sole 10 comprises a sole body 11, an upper first ridge 12a, a lower first ridge 12b, an upper second ridge 14a, a lower second ridge 14b, an upper first valley 13a, a lower first valley 13b, an upper second valley 15a, a lower second valley 15b, a recess 16, and a cushioning member 17. The sole 10 of this embodiment will be described using a sole for the left foot, but it is also applicable to the right foot, and the sole for the right foot is symmetrical to this sole for the left foot.

[0059] The sole 10 is made of a flexible material, specifically ethylene vinyl acetate resin (EVa). In this embodiment, it is ethylene vinyl acetate resin, but polyurethane, polyethylene, butadiene rubber, chloroprene rubber, etc. may also be used.

[0060] The first raised portion 12 comprises an upper first raised portion 12a and a lower first raised portion 12b. As shown in Figure 6, the upper first ridge 12a is raised on the upper surface of the sole body 11, positioned near the base of the toes, and is formed to extend in the width direction of the foot along the base. Furthermore, the upper first ridge 12a is integrally formed with the sole body 11. As shown in Figure 7, when stepping on the ground, the upper first ridge 12a rises upward, thus preventing toes from touching the ground while standing and walking.

[0061] As shown in Figure 5(a), the upper end of the upper first ridge 12a protrudes 5 mm or less from the upper surface of the sole body 11. In this embodiment, the upper end of the upper first ridge 12a protrudes 5 mm or less from the upper surface of the sole body 11, but it can also be 10 mm or less. Alternatively, the upper end of the upper first ridge 12a may not protrude from the upper surface of the sole body 11, but may protrude from the upper surface of the sole body 11 when the foot is stepped on. In this case, when the foot is stepped on, such as when walking, the first ridge 12a, which is formed in an island shape by the valleys, rises upward and protrudes, thus contributing to the prevention of floating toes.

[0062] As shown in Figure 5(a), the upper first ridge 12a has a mountain-shaped cross-section when cut along the longitudinal direction of the foot. This allows the toes to grip the upper first ridge 12a, preventing floating toes, where the toes do not touch the ground when standing or walking.

[0063] The upper first protrusion 12a preferably has a length of 5 mm to 35 mm in the longitudinal direction of the foot, and a width of 40 mm to 80 mm. More preferably, the length from the front end to the rear end is 10 mm to 30 mm in the longitudinal direction of the foot, and the width is 50 mm to 70 mm. By setting it within this range, the upper first protrusion 12a can be reliably conformed to the shape of the base of the toes, preventing floating toes, where the toes do not touch the ground when standing or walking.

[0064] The lower first ridge 12b is formed to protrude from the underside of the sole body 11, positioned to correspond to the area near the base of the toes, and extending in the direction of the width of the foot. Furthermore, a portion of the lower first ridge 12b is integrally formed with the sole body 11. As shown in Figure 7, when stepping on the ground, the upper first ridge 12a rises upward via the lower first ridge 12b, thereby preventing the toes from touching the ground when standing or walking.

[0065] The area of ​​the lower first raised portion 12b viewed from below is equal to the area of ​​the upper first raised portion 12a viewed from above. When stepping on the ground, the upper second raised portion 12a can be reliably raised upward via the lower second raised portion 12b. In this embodiment, the area of ​​the lower first raised portion 12b viewed from below is equal to the area of ​​the upper first raised portion 12a viewed from above, but the area of ​​the lower first raised portion 12b viewed from below may be larger than the area of ​​the upper first raised portion 12a viewed from above.

[0066] As shown in Figure 5(a), the lower end of the lower first protrusion 12b protrudes 5 mm or less from the lower surface of the sole body 11. This causes the first protrusion 12 to be raised upward when stepping on the ground, and also prevents floating toes, where the toes do not touch the ground when standing or walking.

[0067] In this embodiment, the lower end of the lower first ridge 12b protrudes 5 mm or less from the lower surface of the sole body 11, but it can be 10 mm or less. Alternatively, the upper first ridge 12a may not protrude from the lower surface of the sole body 11 but be formed flush with the lower surface of the sole body 11, so that when the foot is stepped on, the upper first ridge 12a rises above the sole body 11. In this case as well, when the foot is stepped on, such as when walking, the first ridge 12, which is formed in an island shape by the valleys, rises and protrudes upward, thus contributing to the prevention of floating toes.

[0068] The lower surface of the lower first ridge 12b is sloped on both sides in the width direction of the sole, with the ends being the lowest. Since the lower first ridge 12b is formed so that the sides in the width direction of the sole are lower than the center, discomfort when wearing the shoe can be reduced.

[0069] The lower first raised portion 12b is provided with a reinforcing member 18a on its lower side, made of a material stronger than the sole body 11. This improves the durability and stability of the shoe. In this embodiment, the reinforcing member 18a is made of rubber, but is not limited to rubber.

[0070] As shown in Figures 1 and 2, the upper first valley 13a is formed on the upper surface of the sole body 11 over the entire area surrounding the upper first ridge 12a. The upper first valley 13a has a shape that is recessed downwards. Preferably, the depth of the upper first valley 13a is 1 mm or more and 5 mm or less from the upper surface of the sole body 11.

[0071] As shown in Figure 3, the lower first valley 13b is formed on the entire area surrounding the lower first ridge 12b relative to the lower surface of the sole body 11. The lower first valley 13b has a shape that is recessed upwards. The lower first valley 13b is formed in a position that overlaps with the upper first valley 13a in the thickness direction. Preferably, the depth of the lower first valley 13b is 1 mm or more and 5 mm or less from the lower surface of the sole body 11.

[0072] By providing an upper first valley 13a and a lower second valley 13b, the portion between the upper first valley 13a and the lower first valley 13b is thinner than the thickness of the sole body 11. This makes it easier for the first raised portion 12 and the sole body 11 to displace independently, and when stepping on the ground, the upward movement of the first raised portion 12 increases.

[0073] As shown in Figures 7(a) and 7(b), when stepping on the ground, the upper surface of the sole body 11 becomes lower than the upper surface of the upper first raised portion 12a, and the sole body 11 is displaced downward relative to the first raised portion 12 so that the lower surface of the sole body 11 contacts the ground, causing the first raised portion 12 to rise upward relative to the sole body 11.

[0074] The second raised portion 14 comprises an upper second raised portion 14a and a lower second raised portion 14b. As shown in Figure 6, the upper second ridge 14a is raised on the upper surface of the sole body 11 and is positioned near the center of the triangle formed by the ball of the big toe, the ball of the little toe, and the heel of the foot. Furthermore, the upper second ridge 14a is integrally formed with the sole body 11. When stepping on the ground, as shown in Figure 7, the upper second ridge 14a rises upward, thus maintaining the function of the three arches in the sole of the foot.

[0075] As shown in Figure 5(a), the upper end of the upper second ridge 14a protrudes 10 mm or less from the upper surface of the sole body 11. In this embodiment, although the upper end of the upper second ridge 14a protrudes from the upper surface of the sole body 11, when the foot is pressed against the ground, the upper end of the upper second ridge 14a protrudes from the upper surface of the sole body 11. As a result, when the foot is pressed against the ground, such as when walking, the second ridge 14, which is formed in an island shape by the valleys, rises upward and protrudes, thus contributing to maintaining the function of the three arches.

[0076] The upper second ridge 14a is longer in the front-to-back direction than in the width direction of the sole body 11. In this embodiment, as shown in Figures 1 and 2, it is formed in a teardrop shape in the longitudinal direction of the sole when viewed from above. This ensures that pressure is applied to the area near the center of the triangle formed by the ball of the big toe, the ball of the little toe, and the heel of the foot, and maintains the function of the three arches on the sole of the foot. In this embodiment, it is formed in a teardrop shape, but it may also be formed in an elliptical shape or the like.

[0077] As shown in Figure 5(b), the upper second ridge 14a is highest in the center of the width direction of the sole body 11. This ensures a secure fit in the depression near the center of the triangle formed by the ball of the big toe, the ball of the little toe, and the heel of the foot, thus maintaining the function of the three arches of the sole.

[0078] The upper second ridge 14a preferably has a length of 30 mm to 70 mm in the longitudinal direction of the foot from the front end to the rear end, and a width of 10 mm to 50 mm. More preferably, it has a length of 40 mm to 60 mm in the longitudinal direction of the foot from the front end to the rear end, and a width of 20 mm to 40 mm. By setting it within this range, it can reliably conform to the shape near the center of the triangle formed by the ball of the big toe, the ball of the little toe, and the heel of the foot, and the function of the arch can be maintained.

[0079] The lower second ridge 14b is raised on the underside of the sole body 11 and is positioned to include a location near the center of the triangle formed by the ball of the big toe, the ball of the little toe, and the heel of the foot. Furthermore, a portion of the lower second ridge 14b is integrally formed with the sole body 11. As shown in Figure 7, when the foot is pressed against the ground, the upper second ridge 14a rises upward via the lower second ridge 14b, thereby maintaining the function of the three arches in the sole of the foot.

[0080] The area of ​​the lower second raised portion 14b viewed from below is equal to the area of ​​the upper second raised portion 14a viewed from above. When stepping on the ground, the upper second raised portion 14a can be reliably raised upward via the lower second raised portion 14b. In this embodiment, the area of ​​the lower second raised portion 14b viewed from below is equal to the area of ​​the upper second raised portion 14a viewed from above, but the area of ​​the lower second raised portion 14b viewed from below may be larger than the area of ​​the upper second raised portion 14a viewed from above.

[0081] As shown in Figure 5(a), the lower end of the lower second ridge 14b protrudes 10 mm or less from the lower surface of the sole body 11. This allows the upper second ridge 14a to be raised upward when stepping on the ground, as shown in Figure 7, and further maintains the function of the three arches in the sole of the foot. In this embodiment, the lower end of the lower second ridge 14b protrudes from the lower surface of the sole body 11, but it is also possible to have the upper second ridge 14a rise upward when stepping on the ground, even if it does not protrude from the lower surface of the sole body 11. In this case as well, when stepping on the ground, such as when walking, the upper second ridge 14a, which is formed in an island shape by the valleys, rises upward and protrudes, thus contributing to maintaining the function of the three arches.

[0082] As shown in Figures 1 and 2, the upper second valley 15a is formed on the upper surface of the sole body 11 over the entire area surrounding the upper second ridge 14a. The upper second valley 15a has a shape that is recessed downwards. Preferably, the depth of the upper second valley 15a is 1 mm or more and 5 mm or less from the upper surface of the sole body 11.

[0083] As shown in Figure 3, the lower second valley 15b is formed on the entire area around the lower second ridge 14b relative to the lower surface of the sole body 11. The lower second valley 15b has a shape that is recessed upwards. The lower second valley 15b is formed in a position that overlaps with the upper first valley 15a in the thickness direction. Preferably, the depth of the lower second valley 15b is 1 mm or more and 5 mm or less from the lower surface of the sole body 11.

[0084] By providing an upper second valley 15a and a lower second valley 15b, the portion between the upper second valley 15a and the lower second valley 15b is thinner than the thickness of the sole body 11. This makes it easier for the second raised portion 14 and the sole body 11 to displace independently, and when stepping on the ground, the upward movement of the second raised portion 14 increases.

[0085] As shown in Figures 7(a) and 7(b), when the foot is pressed against the ground, the upper surface of the sole body 11 becomes lower than the upper surface of the upper second protrusion 14a, and the sole body 11 is displaced downward relative to the second protrusion 14 so that the lower surface of the sole body 11 contacts the ground, causing the second protrusion 14 to rise upward relative to the sole body 11.

[0086] The lower second raised portion 14b is provided with a reinforcing member 18C made of a material stronger than the sole body 11 on its underside. This improves the durability and stability of the shoe. In this embodiment, the reinforcing member 18C is made of rubber, but is not limited to rubber. Furthermore, reinforcing members 18B and 18D are provided on the underside of the sole body 11 between the front reinforcing member 18a and reinforcing member 18C, and in the heel area, respectively.

[0087] As shown in Figures 1, 4, and 6, the upper surface of the sole body 11 is provided with a recess 16 positioned to correspond to the heel of the foot, and a sponge cushioning member 17 is housed in this recess 16. This reduces the impact on the heel when a pedestrian lands, thereby reducing the burden on the pedestrian's foot.

[0088] The thickness of the cushioning member 17 is 1 mm or more and 6 mm or less. As shown in Figures 1 and 5(a), the shape of the cushioning member 17 is such that its height is approximately the same as the height dimension of the recess 16, and it is positioned so that the upper surface of the cushioning member 17 housed in the recess 16 is flush with the upper surface of the shoe sole body 11. In this embodiment, the material housed in the recess 16 is sponge, but any material with cushioning properties is acceptable and is not limited to sponge.

[0089] <Second Embodiment> Next, a second embodiment of the present invention will be described. The main difference from the first embodiment is the presence or absence of the second ridge, so this point will be explained primarily. In the first embodiment described above, the sole 10 is provided with a first ridge 12, an upper first valley 13a and a lower first valley 13b, and a second ridge 14, an upper second valley 15a and a lower second valley 15b. However, in order to obtain the effect of preventing floating toes, it is also possible to configure the sole as being provided only with the first ridge, the upper first valley and the lower first valley. Figure 8 is a perspective view of the sole according to the second embodiment. Figure 9 is a cross-sectional view along the CC line in Figure 8.

[0090] As shown in Figure 8, the sole 20 of this embodiment includes a first ridge 22, an upper first valley 23a, and a lower first valley 23b, but does not have a second ridge. As shown in Figure 9, the upper surface of the upper first ridge 22a is curved so as to be convex upward. The upper surface of the upper first ridge 22a protrudes 10 mm or less from the upper surface of the sole body 21. When stepping on the ground, the first ridge 22 rises upward, which prevents toes from touching the ground when standing or walking.

[0091] <Third Embodiment> Next, a third embodiment of the present invention will be described. The main difference from the first embodiment is the structure of the first and second raised portions, so this point will be explained in detail. Figure 10 is a perspective view of the sole 30 according to the third embodiment. Figure 11 is a plan view of the sole 30, and Figure 12 is a bottom view of the sole 30.

[0092] The sole 30 of the third embodiment of the present invention comprises a first raised portion 32 having an upper first raised portion 32a and a lower first raised portion 32b, and a second raised portion 34 having an upper second raised portion 34a and a lower second raised portion 34b.

[0093] The width of the lower first ridge 32b extends almost the entire width of the sole, and as shown in Figure 13(b), the area of ​​the lower first ridge 32b viewed from below is larger than the area of ​​the upper first ridge 32a viewed from above. This allows the upper first ridge 32a to be more reliably lifted upward via the lower first ridge 32b when stepping on the ground. It also allows for smoother walking. Furthermore, because the area of ​​the first lower ridge that contacts the ground is large, walking can be done without discomfort, and the strength of the side that contacts the ground can be increased.

[0094] Furthermore, unlike the EVA of the sole body, a rubber reinforcing member 38a, which is stronger than EVA, is provided on the lower surface of the lower first raised portion 32b. This increases the strength of the lower surface that contacts the ground. In addition, the boundary between the EVA of the sole body 31 and the reinforcing member 38a on the lower surface of the lower first raised portion 32b is positioned above the lower surface of the sole and is concealed within the lower first valley portion 33b (see Figure 13). This prevents the reinforcing member on the lower surface from peeling off compared to when these boundaries are flush with or protrude from the lower surface of the sole.

[0095] Furthermore, since the area of ​​the lower first raised portion 32b is larger than the area of ​​the upper first raised portion 32a, and similarly, the area of ​​the reinforcing member 38a on the lower surface side of the lower first raised portion 32b is larger than the area of ​​the upper first raised portion 32a, the strength of the lower surface side that contacts the ground is increased, and this is also advantageous in terms of preventing the reinforcing member from peeling off.

[0096] Furthermore, in the first embodiment, the lower first valley 13b is formed in a position that overlaps with the upper first valley 13a in the thickness direction (see Figures 2 and 3), but in this embodiment, the lower first valley 33b and the upper first valley 33a are formed in positions that do not overlap in the thickness direction.

[0097] The lower end corner of the first lower protrusion 32b has a rounded shape and is at the same height as the lower surface of the sole body 31. This allows for smooth walking.

[0098] Furthermore, in the first embodiment, the rear end of the upper second protrusion 14a is formed in a hemispherical, pointed shape, but in this embodiment, the rear end of the upper second protrusion 34a is formed in a substantially straight shape, resulting in a shape that is elongated in the front-to-back direction.

[0099] The lower second ridge 34b includes the upper second ridge 34a in a plan view and is longer in the front-to-back direction than in the width direction of the sole body 31. Furthermore, as shown in Figure 12, the lower second ridge 34b comprises a first island 34b1 positioned in a plan view corresponding to the upper second ridge 34a, and a second island 34b2 located behind the first island 34b1. A valley is formed between the first island 34b1 and the second island 34b2, which promotes the upward movement of the upper second ridge 34a via the first island 34b1 when the foot is stepped on.

[0100] Furthermore, the first island portion 34b1 of the lower second ridge portion 34b is formed so that the front and rear portions in the anterior-posterior direction of the sole are lower than the central portion. The lower surface of the first island portion 34b1 of the lower second ridge portion 34b is sloped so that the front and rear portions in the anterior-posterior direction of the sole are the lowest. The lower surface of the second island portion 34b2 of the lower second ridge portion 34b and the lower surface surrounding the second island portion 34b2 on the sole body 11 are formed at a height that is flush. This reduces snagging and promotes smooth walking when performing a walking motion in which the heel gradually makes contact with the ground from the front, thereby reducing discomfort while walking and enabling smooth walking.

[0101] The area of ​​the lower second raised portion 34b viewed from below is larger than the area of ​​the upper second raised portion 34a viewed from above. As a result, when stepping on the ground, the upper first raised portion 32a is more reliably raised upward via the lower first raised portion 32b, and because the area of ​​the lower raised portion that contacts the ground is larger, walking can be done without discomfort, and the strength of the side that contacts the ground can be increased.

[0102] Furthermore, unlike the EVA of the sole body, a rubber reinforcing member 38C with higher strength than EVA is provided on the underside of the lower second ridge portion 34b. This increases the strength of the underside that contacts the ground. In addition, the boundary between the EVA of the sole body 31 and the reinforcing member 38C on the underside of the lower second ridge portion 34b is positioned above the underside of the sole and is concealed within the lower second valley portion 35b (see Figure 13). This prevents the peeling of the underside reinforcing member 38C compared to cases where these boundaries are flush with or protrude from the underside of the sole.

[0103] Furthermore, since the area of ​​the lower second protrusion 34b is larger than the area of ​​the upper second protrusion 34a, and similarly, the area of ​​the reinforcing member 38C on the underside of the lower second protrusion 34b is larger than the area of ​​the upper second protrusion 34a, the strength of the underside that contacts the ground is increased, and it is also advantageous in terms of preventing the reinforcing member from peeling off. In addition, reinforcing members 38B and 38D are provided on the underside of the sole body 31, between the front reinforcing member 38a and reinforcing member 38C, and in the heel area.

[0104] Furthermore, in the first embodiment, the lower second valley portion 13b is formed in a position that overlaps with the upper second valley portion 13a in the thickness direction (see Figures 2 and 3), but in this embodiment, as shown in Figure 13, the lower second valley portion 35b and the upper second valley portion 35a are formed in positions that do not overlap in the thickness direction.

[0105] <Other Embodiments> As described above, preferred embodiments of the present invention have been explained, but it goes without saying that the present invention is not limited to the embodiments described above, and various modifications or alterations within the scope of the claims also fall within the technical scope of the present invention.

[0106] For example, in the above embodiment, the sole 10 is formed integrally with the sole body 11, with at least a portion of the first raised portion 12 and / or at least a portion of the second raised portion 14. However, the first raised portion 12 and the second raised portion 14 may be detachably attached to the sole body 11. This allows for easy replacement of the first raised portion 12 and the second raised portion 14 with new ones if they are damaged or worn.

[0107] In the above embodiment, the sole 10 has a recess 16 at a position corresponding to the heel of the foot, and a cushioning member 17 is housed in the recess 16. However, the configuration may also be such that neither the recess 16 nor the cushioning member 17 is provided, and the portion of the cushioning member 17 is integrally formed from the same material as the sole body 11.

[0108] Furthermore, in the above embodiment, the sole 10 has an upper first valley 13a on the upper surface of the entire sole 11 and a lower first valley 13b on the lower surface of the sole body 11 around the first raised portion 12, but it may also have only one of the upper first valley 13a or the lower first valley 13b.

[0109] In the above embodiment, the sole 10 has an upper second valley 15a on the upper surface of the sole body 11 and a lower second valley 15b on the lower surface of the sole body 11 around the second raised portion 14, but it may also have only one of the upper second valley 15a or the lower second valley 15b. [Explanation of Symbols]

[0110] 10 Soles 11. Sole 12 1st protuberance 12a Upper first raised part 12b Lower first raised part 13a Upper first valley 13b Lower first valley 14 Second bulge 14a Upper second raised part 14b Lower second raised part 15a Upper second valley 15b Lower second valley 16 recesses 17 Cushioning material 18a Reinforcement member 18B Reinforcement member 18C Reinforcement Member 18D Reinforcement Member 20 Soles 21 Shoe sole 22 1st protuberance 23a Upper first valley 23b Lower first valley 30 Soles 31. Sole 32 1st protuberance 32a Upper first raised part 32b Lower first bulge 33a Upper first valley 33b Lower first valley 34 Second bulge 34a Upper second raised part 34b Lower second raised part 34b1 1st Island 34b2 2nd island part 35a Upper second valley 35b Lower second valley 36 recesses 37 Cushioning material 38a Reinforcement member 38B Reinforcement member 38C Reinforcement member 38D Reinforcement member

Claims

1. An upper first ridge is formed on the upper surface of the sole body, positioned to correspond to the area near the base of the toes, and extending in the width direction of the foot along the base; an upper first valley is formed around the upper first ridge relative to the upper surface of the sole body; a lower first ridge is formed on the lower surface of the sole body, positioned to correspond to the area near the base of the toes, and extending in the width direction of the foot; and a lower first valley is formed around the lower first ridge relative to the lower surface of the sole body. The shoe sole comprises: an upper second ridge that rises on the upper surface of the shoe sole body and is positioned near the center of the triangle formed by the ball of the big toe, the ball of the little toe, and the heel of the foot; an upper second valley formed around the upper second ridge relative to the upper surface of the shoe sole body; a lower second ridge that rises on the lower surface of the shoe sole body and is positioned to include a position near the center of the triangle formed by the ball of the big toe, the ball of the little toe, and the heel of the foot; and a lower second valley formed around the lower second ridge relative to the lower surface of the shoe sole body. The lower first ridge is formed such that both sides in the width direction of the sole are lower than the central part, and both ends are sloped to be the lowest. A reinforcing member made of a material stronger than the sole body is provided on the lower side, and the boundary between the sole body and the reinforcing member is located above the lower surface of the sole body and is hidden in the lower first valley. The lower second raised portion is provided with a reinforcing member made of a material stronger than the sole body on its lower surface, and the boundary between the sole body and the reinforcing member is located above the lower surface of the sole body and is hidden within the lower second valley. A shoe sole characterized in that, when the foot is stepped on, the upper first ridge rises upward via the lower first ridge, and the upper second ridge rises upward via the lower second ridge.

2. The region of the lower first protrusion viewed from below is equal to the region of the upper first protrusion viewed from above. The sole of a shoe according to claim 1.

3. The region of the lower first protrusion viewed from below is larger than the region of the upper first protrusion viewed from above. The sole of a shoe according to claim 1.

4. The upper end of the upper first protrusion is characterized in that it protrudes 10 mm or less from the upper surface of the sole body. The sole of a shoe according to claim 1.

5. The lower end of the lower first protrusion is characterized in that it protrudes 10 mm or less from the lower surface of the sole body. The sole of a shoe according to claim 1.

6. The upper end of the upper first protrusion does not protrude from the upper surface of the sole body, and is characterized in that when the foot is pressed against the ground, the upper end of the upper first protrusion protrudes from the upper surface of the sole body. The sole of a shoe according to claim 1.

7. The lower end of the lower first protrusion does not protrude from the lower surface of the sole body, and when the foot is pressed against the ground, the upper first protrusion rises upward. The sole of a shoe according to claim 1.

8. The upper first protruding portion is characterized in that the cross-section when cut in the longitudinal direction of the leg has a mountain-like shape. The sole of a shoe according to claim 1.

9. The upper first protrusion is characterized in that its length from the front end to the rear end is 5 mm or more and 35 mm or less in the longitudinal direction of the leg, and its width is 40 mm or more and 80 mm or less. The sole of a shoe according to claim 1.

10. The region of the lower second protrusion viewed from below is equal to the region of the upper second protrusion viewed from above. The sole of a shoe according to claim 1.

11. The region of the lower second protrusion viewed from below is larger than the region of the upper second protrusion viewed from above. The sole of a shoe according to claim 1.

12. The upper end of the upper second protrusion is characterized in that it protrudes 10 mm or less from the upper surface of the sole body. The sole of a shoe according to claim 1.

13. The lower end of the lower second protrusion is characterized in that it protrudes 10 mm or less from the lower surface of the sole body. The sole of a shoe according to claim 1.

14. The upper end of the upper second protrusion does not protrude from the upper surface of the sole body, and is characterized in that when the foot is pressed against the ground, the upper end of the upper second protrusion protrudes from the upper surface of the sole body. The sole of a shoe according to claim 1.

15. The lower end of the lower second protrusion does not protrude from the lower surface of the sole body, and when the foot is pressed against the ground, the upper second protrusion rises upward. The sole of a shoe according to claim 1.

16. The upper second protrusion is longer in the front-to-back direction than in the width direction of the sole body. The sole body is characterized in that the central part in the width direction is the highest point. The sole of a shoe according to claim 1.

17. The lower second ridge is characterized in that, in a plan view, it includes the upper second ridge and is longer in the front-to-back direction than in the width direction of the sole body. The sole of a shoe according to claim 1.

18. The lower second protrusion is characterized by comprising a first island portion positioned in a plan view corresponding to the upper second protrusion, and a second island portion located behind the first island portion. The sole of a shoe according to claim 1.

19. The first island portion of the lower second raised portion is characterized in that the front and rear portions in the front-to-back direction of the sole are formed lower than the central portion. The sole of a shoe according to claim 18.

20. The lower surface of the first island portion of the lower second protrusion is characterized in that the front and rear portions in the front-to-back direction of the sole are inclined such that the front and rear ends are the lowest. The sole of a shoe according to claim 19.

21. The lower surface of the second island portion of the lower second raised portion and the lower surface surrounding the second island portion of the sole body are formed at a height that is flush with each other. The sole of a shoe according to claim 18.

22. The upper second protrusion is characterized in that it is 30 mm to 70 mm in the longitudinal direction of the foot from the front end to the rear end, and has a width of 10 mm to 50 mm. The sole of a shoe according to claim 1.

23. The invention is characterized in that at least a portion of the first raised portion and / or at least a portion of the second raised portion are integrally formed with the sole body. The sole of a shoe according to claim 1.

24. It is characterized by having a recess positioned to correspond to the heel of the foot, and a cushioning member being housed in the recess. The sole of a shoe according to claim 1.

25. The cushion member is characterized in that its thickness is 1 mm or more and 6 mm or less. The sole of a shoe according to claim 24.

26. The sole body is characterized by being made of ethylene vinyl acetate resin. The sole of a shoe according to claim 1.

27. A shoe characterized by comprising the sole described in any one of claims 1 to 26, shoes.

Images